Starting device for explosive-engines.



P. W. KANE.

STARTING DEVICE FOR EXPLOSIVE ENGINES.

APPLIOATIOH FILED APB-1. 1911.

Patented Aug. 13, 1912.

2 SHEETS-SHEET 1.

Inventor WE tnesse l e i l c ze 4;,

P. W. KANE.

STARTING DEVICE FOR EXPLOSIVE ENGINES. APPLIOATION FILED APR. 1. 1911.

1 1, 5, 7 Patentd Aug. 13,1912.

2 SHEETS-SHEET 2.

Fig. .9 FVztnesses: Inventor:-

UNITED STATES PATENT. OFFICE.

TETEB'W. OF CHICAGO, EIINO'IS, ASSIGIlTOR 1'0 KANE "MACHINERY COMPANY,

- A A. CORPORATION OF ILLINOIS.

Specification of Letters Patent.

Patented Aug. 13, 1912.

Application ma April 1, m1. semi No. mama To all whom it may concern:

Be it known tha- 1", PETER W. KANE, a

citizen of the Unite States, and residing at Chicago, in the county ofCook and State of Illlnois, have invented a new and useful Improvementin Starting Devices for Ex: plosive-Engines, of which the following is acor p lplete specification.

e main objects of this invention are to' provide a startin device forexplosive engines which will Ee and simple in its construction; toprovide a starting device which will automatically repositive in itsoperation lease itself from the shaft in case the engine 'backfires orkicks; to provide a starting device in which the operating pawl is nor--mally held out of engagement with the op-' erating ratchet to preventinjury in case the engine backfires or kicks during the return movementof the pawl; and to provide a very strong and durable starting device inwhich the operating mechanism is automatically thrown into operativeposition atthe beginning of the starting movement.

A specific construction embodied in said invention is illustrated in theaccompanying drawings, in which:

Figure 1 is a side elevation of the starting device with one side of thecasing removed to show the mechanism, and showing in dotted lines theposition of the operating lever and pawl at the beginning of thestroke.- Fig. 2 is a central vertical section.

of Fig. 1. Fig. 3 is a bottom plan view of the device. Fig. 4 is a sideand front elevation of the operating lever. Fig. 5 is a side elevationand top plan view of the operating pawl. Fig. 6 is a side elevation anda central section of the operating ratchet. Fig. 7 is a side elevationand top plan view of the tripping pawl. Fig. 8 is a side elevation andtop plan view of the actuating dog for the operating'pawl. Fig. 9 1s afragmentary side elevation of the device with the pawls in normalposition.

In the construction shown, the casing 1 1s stationary and is. providedin its lower side with a slot or opening 2 through which the operatinglever 3 projects. The engine shaft 4 extends axially through the casing1 and is rotatable therein, and the inner end of the lever 3 is forkedand the prongs 5 of the fork are provided with apertures 6 in which theshaft is journaled. Rigidly keyed on the shaft between the prongs 5 ofthe lever is "the operating ratchet 7, which has teeth 8 on itsperiphery, An operating pawl 9 is pivoted "intermediate its ends betweenthe prongs of the lever by means of-a p1n'10 which is rigidly secured tosaid pawl and journaled in the prongs 5. The forward end of the pawl isprovided with teeth 11 which are adapted to engage the teeth 8 of theratchet 7. Hinged'to the rear end of the pawl 9 is a tripping pawl 12which has its point turned toward a stationary ratchet 13, which isconcentric with the ratchet 7 and is rigidly secured to the casing 1 inposition for the tripping pawl to travel along the same. A spring 14 iscarried on the hinge 0r pivot pin 15 of the tripping pawl, and issecured at its ends to the tripping pawl and to the rear end of theoperating pawl 9., Said spring acts normally to hold the triping pawli'n alinement with the rear end 0. the pawl '9 and out of engagementwith the ratchet 13.

For the purpose of normally holding the nected with one end of the pin10 and extends toward the shaft 4. Springs 17 and 18 are connected tothe end of the arm 16 and to pins '19 on the side of the lever 3 and actto hold the pawls 9 and 12 out of engagement with their respective'ratchets, as shown in Fig. 9, at all times except during the forwardmovement of the le\ er 3 when starting the engine.

For the purpose of throwing the operating pawl 9 into engagement withthe ratchet 7 when the lever-3 is at the rearward limit of its movement,a wedge shaped actuating dog 20 is pivoted on the side of the casing atthe rearward limit of movement of the pawl 9, and has its thin enddirected toward the forward travel of said pawl. A spring 21 isconnected at. oneend to a lug 22 on the casing at the rear of the dog,and its other end is connected to an arm 23 on the dog. Said arm'23 isadapted to contact with a lug 24 on the ratchet 13 to limit the outwardmovement of the dog. The spring 21 normally holds the dog in positionfor the rear end of the ratchet 9 to travel thereon and to force saidrear end outwardly toward the periphery of the casing and thereby throwthe teeth of the pawl into engagement with the teeth of the ratchet 7,and the pawl 12 ins into position .to travel against the teeth of theratchet 13, as shown in dotted lines in Fig. 1.

The operation of the construction shown" 'isas follows: The operatingpawl 9 and the tripping pawl 12 are normally held out of engagement withthe ratchets 7 and 13.1137"; means of the springs 17 and 18. When tlrdpawls are in that position the operatingflever 8 may be swungrearwardly, and as the rear end of the pawl 9 rides over the dog 20 thedog forces the teeth 11 into engagement with the teeth 8 of the ratchet7, and forces the pawl 12 into yield ng engagement with the ratchet l3.-When the operating lever is swung forwardly .the pawl 9 rotates theshaft- 1- to start the engine. Should the-en-fl.

.gine backfire or kick before the pawl 9 is released from the ratchet?the pawl 12 will engage the teeth of the ratchet 13, and,--hy turningdownwardly on its hinge, will force the rear end of the pawl 9 towardthe ratchet 7 and throw the teeth 1 1- out of engagement nith the, teeth8, 'thereby permitting the shaft to reverse without throwing the lever 3back. The springs 17 and 18 will then throw the pawls to normalposition, and the lever 3 may be thrown back to repeat the operation.

While I have shown but one specific embodiment of my invention it willbe understood that numerous details of the construction shown may bevaried or omitted with out departing from the scope of the claims- Iclaim:

1. Astarting device, comprising a shaft, a ratchetrigidly' secured onthe shaft, a lever journaled on the shaft adjacent to the ratchet, anoperating pawl pivoted on the lever and adapted to engage the ratchet, atripping pawl on the rear end of the operating pawl, a-ratchet adaptedto engage the tripping pawl and release the operating pawl from theratchet and means connecting the operating pawl with the lever adaptedto normally hold said pawls out of engagement with their ratchets.

A starting device, comprising a shaft, a ratchet rigidlysecured on theshaft, a stationary ratchet'adjacent to the shaft, a lever jonrnaled on,the shaft, 2 pair of pawls hinged together and pivoted on the lever inposition to engage the ratchets, a spring on the hinge joint betweensaid pawls and adapted to normally hold them in aliriement, and meansadapted to normallyhold said pawls out of engagement with the ratchets;

1i starting device for explosive engines,

comprising an operating'ratchet adapted to be secured to the engineshaft, a stationary ratchet concentric with the operating ratchet,

. a leverljournaled on the engine shaft, an op- ,"ating pawl pivotedintermediate its endsn the lever and adapted toengage' theopra'tingratchet, a tripping pawl hinged to "the rear end of theoperating pawl and 'adapted to engage the stationary ratchet when theoperating pawl is in engagement with the operating ratchet, meansadapted to normally hold said pawls out of engage ment with theratchets, and means for. throwing said pawls into engagement-- with theratchets atthe rearward limitoftheir move ment.

,4; A starting device for explosive engines, c omprising an operatingratchet adapted to be secured to the engine shaft, a stationary ratchetconcentric withthe operating ratchet, a lever journaled on the engineshaft, an operating pawl pivoted intermediate its ends on the lever andadapted to engage the op-' erating ratchet, a tripping pawl hinged tothe rear end of the operating pawl and adapted to engage the stationaryratchet when the operating pawl is in engagement with the operatingratchet, a spring controlled actuating dog adapted to throw said pawlsinto engagement with the ratchets when at their rearward limit ofmovement, and means for normally holding said pawls out ofengagementwith their ratchets.

A starting device for explosive engines, comprising an operating ratchetrigidly secured on the engine shaft, a lever journaled on the shaft, astationary ratchet, an oper to engage the operating ratchet, a trippingpawl hinged to the rear end of the operatlng pawl and adapted to engagethe statipnary ratchet when the operating pawl engages the operatingratchet and to throw the operating pawl out of engagement with the operating ratchet when the engine fackfires,

means adapted to normally hold said pawls out of engagement with theratchets, and

means at the rearward limit of travel of said pawls adapted to throwthem into engagement with the ratohets.

In testimony whereof I have hereunto subscribed my name in the presenceof two witnesses.

rnrnn w. KANE,

Witnesses:

EDWARD L. LONERGAN, CHARLES W. Jonas.

Copies of this patent may be obtained for five cents each, byaddressingthe Commissioner of Patents.

Washington, D. C.

